Persulfate enhanced photocatalytic degradation of bisphenol A over wasted batteries-derived ZnFe2O4 under visible light
Persulfate enhanced photocatalytic degradation of bisphenol A over wasted batteries-derived ZnFe2O4 under visible light
复制标题
过硫酸盐在可见光下增强废电池 ZnFe2O4 光催化降解双酚 A
DOI：
10.1016/j.jclepro.2020.124246
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发表时间：
2020-12-10
影响因子：
11.1
通讯作者：
Zhang, Hui
中科院分区：
文献类型：
--
作者：
Li, Ruimeng;Hu, Hanwen;Zhang, Hui
Zinc ferrite (ZnFe2O4) with visible (Vis) light response was synthesized via sol-gel method by using waste alkaline ZneMn batteries as raw materials. The morphology, composition and optical properties of ZnFe2O4 were characterized. In order to suppress the fast recombination of photoinduced electron-hole pairs and improve the photocatalytic performance of ZnFe2O4, peroxydisulfate (PDS) was introduced to the photocatalytic system as the external electron acceptor. With the presence of PDS, the removal efficiency of target contaminant bisphenol A (BPA) achieved 96.5% in a 120 min reaction at natural pH 6.0. Photoluminescence (PL) spectroscopy combined with amperometric tests was used to determine the role of PDS on the performance of photocatalytic reaction. The main reactive species for BPA removal were determined by electron paramagnetic resonance (EPR) measurement and quenching experiments. The results indicated that the holes and reactive species (SO4 center dot- and (OH)-O-center dot) produced by activation of PDS with photogenerated electrons mainly contributed to the elimination of BPA. Furthermore, the effect of various operating parameters on the removal of BPA as well as the reusability and stability of catalyst was investigated to explore the applicability of ZnFe2O4 used in the PDS-mediated photocatalytic system for wastewater treatment. (C) 2020 Elsevier Ltd. All rights reserved.
